A research team from the Yunnan Observatories of the Chinese Academy of Sciences (CAS), in collaboration with other researchers, has developed a new method to estimate how stellar-mass compact objects ...

Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

In the end, the Universe becomes a place where gravity and quantum physics slowly turn all mass into faint streams of particles.

Physicists have chased a unified description of nature for more than a century, yet quantum theory and gravity have ...

This study shows that the universe itself can push the boundaries of physics in ways laboratory tests cannot. By ruling out ...

“Our latest discovery helps solve a 20-year cosmic mystery,” co-lead author Daniel Whalen from the University of Portsmouth's ...

The European Space Agency said that the black hole inside the spiral galaxy NGC 3783 has the mass of 30 million suns.

It’s a powerful technique, but small uncertainties at each step can add up, something critics argue may be behind the Hubble ...